Firing the 111-ton gun at Woolwich (the largest gun in existence). Constructed at the Elswick Works of Sir W. G. Armstrong, Mitchell & Co. of Newcastle upon Tyne, it was designed for arming the most modern warships. It had a calibre of 16.25in and a total length of 43ft 8in. Its 1800lb shells emerged from the muzzle at a speed of 2020ft per second, and could penetrate wrought iron to a depth of 30.6in at a distance of 1000yds. The gun had an effective range of 8 miles. Picture shows the gun being tested at Woolwich Arsenal in South East London.